Ali Brian, Sally Taunton, Chelsee Shortt, Adam Pennell and Ryan Sacko

open space for games (e.g., tag, relay races). Classroomteachers monitored daily recess. Instrumentation Test of Gross Motor Development—Second Edition Results from the Test of Gross Motor Development–second edition (TGMD-2; Ulrich, 2000 ) are often used to determine the gross motor development of

Ryan D. Burns, Youngwon Kim, Wonwoo Byun and Timothy A. Brusseau

accelerometers for 5 consecutive school days (Monday through Friday) between the hours of 8 AM and 3 PM (7 h). The device was worn on the waist at the level of the iliac crest aligned with the right kneecap. Classroomteachers, physical educators, and members of the research team ensured that the devices were

Aston K. McCullough and Carol Ewing Garber

single day, and they also received semi-monthly visits in the home from one of their regular classroomteachers. The study protocol was approved by the affiliated Institutional Review Boards (IRB), and parents provided informed consent according to IRB procedures and policies. Measures Sociodemographic

Nancy Getchell, Nadja Schott and Ali Brian

certain behavioral benchmarks are met, pre-planned modifications in design occur. For example, researchers examining the effectiveness of motor skill interventions performed by classroomteachers may adapt their intervention based on how accurately and appropriately the teachers deliver their lessons (e